“In short, horrible, but only to be expected in the wake of the equity plunge and the subsequent collapse in confidence,” said Ian Shepherdson, chief economist at High Frequency Economics, a private research firm.

Asked in a one-time question whether the financial crisis was affecting business, 82.2 percent of respondents said they had reduced spending, hiring or both, according to the ISM report.

New orders, deliveries, backlogs and inventories all fell.

The one glimmer of good news could also be further evidence of a recession: After a summer of price hikes, the index of prices paid showed its largest one-month decline since the index was first reported in 1997.

One of the few industries reporting growth was utilities, but that business is not immune to the downturn. Duke Energy Corp ., one of the nation’s largest electric power companies , said Wednesday its third-quarter profit fell 65 percent. It blamed the worsening economy, as well as record Midwest storm outages, for the decline.